Battery charger



FIG. 1 is a perspective view of the battery charger;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right-hand view thereof;

FIG. 5 is a left-hand view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The design consists of the features of shape, ornamentation and configuration of the battery charger shown in the drawings.

The broken lines shown in the drawings are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a battery charger, as shown and described. 